Solve the variation problem.The amount of water used to take a shower is directly proportional to the amount of time that the shower is in use. A shower lasting 16 minutes requires 8 gallons of water. Find the amount of water used in a shower lasting 9 minutes.

A. 5 gallons
B. 4 gallons
C. 4.5 gallons
D. 144 gallons

Answer: C

Mathematics

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